One of the best ways to avoid plagiarism is to give credit whenever you:
Whether your information source comes from from the Web or from print materials, it is important that you record the information in your papers accurately and follow the citation style that is appropriate for the discipline.
APA Style refers to the citation format established by the American Psychological Association. APA is the format preferred by most of the disciplines in the social sciences.
MLA Style refers to the citation format established by the Modern Language Association. MLA is the format preferred by most of the disciplines in the humanities.
CSE/CBE Style refers to the citation format established by the Council of Biology Editors. CBE is the format preferred by writers in Biology, Geology, Chemistry, Mathematics, Medicine, and Physics.
For more information on citation styles, visit the Citing Information Tutorial.